Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net Income (Loss)	$ (7,637,340)	$ (16,312,308)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Cost of securities purchased	(334,428,381)	(350,511,697)
Proceeds from securities sold and matured	392,943,548	496,974,835
Cost of affiliated investments purchased	(158,713,193)	(202,634,646)
Proceeds from affiliated investments sold	142,448,909	173,324,020
Net accretion of discount on United States Treasury Obligations	(1,430,074)	(928,796)
Net realized (gain) loss on United States Treasury Obligations and Affiliated Investments	8,909	6,578
Net change in unrealized (gain) loss on United States Treasury Obligations and Affiliated Investments	(246,857)	18,558
Change in operating assets and liabilities:
Variation margin- Currency Futures Contracts	(3,293,373)	(6,320,158)
Dividends from affiliates	(1,329)	(911)
Management fees	(39,889)	(49,060)
Brokerage commissions and fees	(3,947)	272
Net cash provided by (used for) operating activities	29,606,983	93,566,687
Cash flows from financing activities:
Proceeds from purchases of Shares	69,990,564	103,691,677
Redemption of Shares	(99,057,878)	(197,257,364)
Decrease in payable for amount due to custodian, net	(539,669)	(1,000)
Net cash provided by (used for) financing activities	(29,606,983)	(93,566,687)
Cash at beginning of period	0	0
Cash at end of period	$ 0	0
Supplemental disclosure of cash flow information
Cash paid for interest		$ 2,387